You've got to take the initiative to play your game. Confidence makes the difference.

When I was younger, I was a robot. Wind her up and she plays tennis.

If you can react the same way to winning and losing, that is a big accomplishment. That quality is important because it stays with you the rest of your life.

I think they will feel obligated to give back,

Ninety percent of my game is mental. It's my concentration that has gotten me this far.

You've got to take the initiative and play your game. In a decisive set, confidence is the difference.